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i <br /> APPENDIX F <br /> AGE-NC-Project No 99-0592 <br /> Page 2 of 3 <br /> 1) Approximate volume of soil in inner zone (V,) <br /> V, _ 02)(4/3)(3 14)(3 33 ft)' -+ 77 3 ft3 <br /> Using19 900 m as the average concentration of gasoline in the inner zone, the weight of <br /> � �g g <br /> gasoline is <br /> V, • typical weight of soil • average concentration of contaminant <br />' 77 3 ft3 • 125 lbs/ft3 • 0 0199 4 192.3 lbs of gasoline <br /> I2) Approximate volume of soil to the boundary of the second zone (V2) <br /> V2 = (440 ft')(4 8 ft) -4 2,112 ft3 <br /> The volume of the inner zone(V,)should be subtracted from the overall volume of the second zone <br /> (V2) to get the volume of soil within the second zone of contamination M) <br /> • Vz =V2 - VI --0 2,112 ft3 - 77 3 ft3 -D 2,035 ft3 <br /> Using 5,320 mg/kg as the average concentration of gasoline in the inner zone,the weight of gasoline <br /> is <br /> Vz • typical weight of soil • average concentration of contaminant -4 <br /> 2,035 ft3 • 125 lbs/ft3 • 0 0053 -1� 1,348.2 lbs of gasoline <br /> I3) Approximate volume of soil to the boundary of the third zone (V3) <br /> V3 = (316 ft2)(7 5 ft) + (416 ftz)(5 5 ft) -4 2,370 ft3 +2,288 ft3 -+ 4,658 ftp <br /> The complete volume of the second zone(V2) should be subtracted from the overall volume of the <br /> third zone (V3) to get the volume of soil within the third zone of contamination (V3) <br /> V3 = V3 - V2 4 4,658 ft3 - 2,112 ft3 -4 2,546 ft3 <br /> Using 550 mg/kg as the average concentration of gasoline in the inner zone, the weight of gasoline <br /> is <br /> V3 • typical weight of soil • average concentration of contaminant -4 <br /> �• 2,546 ft3 • 125 lbs/ft3 • 0 00055 -4 175.0 lbs of gasoline <br /> 1 <br /> Advanced GeoEnvironmental,Inc <br /> 1 <br />